Switch from user to become-user

Kubespray documentation advices to use --become and
--become-user==root while running the playbook. In
order to ensure we can do this, we need the user who
is executing deploy.sh captured and created on target
nodes.

https://github.com/kubernetes-sigs/kubespray#usage

Change-Id: Idc0bc5819d47e3e7530d274be65473aac397ca3c
3 files changed